/**@file

Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

Module Name:

  WinNtThunk.c

Abstract:

  Produce WinNtThunk protocol and it's associated device path and controller 
  state protocols. WinNtThunk is to the NT emulation environment as 
  PCI_ROOT_BRIGE is to real hardware. The WinNtBusDriver is the child of this
  driver.

  Since we are a root hardware abstraction we do not install a Driver Binding
  protocol on this handle. This driver can only support one one WinNtThunk protocol
  in the system, since the device path is hard coded.

**/

//
// The package level header files this module uses
//
#include <Uefi.h>
#include <WinNtDxe.h>
//
// The protocols, PPI and GUID defintions for this module
//
#include <Protocol/WinNtThunk.h>
#include <Protocol/DevicePath.h>
//
// The Library classes this module consumes
//
#include <Library/UefiDriverEntryPoint.h>
#include <Library/WinNtLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DevicePathLib.h>

#include "WinNtThunk.h"

//
// WinNtThunk Device Path Protocol Instance
//
WIN_NT_THUNK_DEVICE_PATH mWinNtThunkDevicePath = {
  {
    HARDWARE_DEVICE_PATH,
    HW_VENDOR_DP,
    (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
    (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8),
    EFI_WIN_NT_THUNK_PROTOCOL_GUID,
  },
  {
    END_DEVICE_PATH_TYPE,
    END_ENTIRE_DEVICE_PATH_SUBTYPE,
    END_DEVICE_PATH_LENGTH,
    0
  }
};


EFI_STATUS
EFIAPI
InitializeWinNtThunk (
  IN EFI_HANDLE                            ImageHandle,
  IN EFI_SYSTEM_TABLE                      *SystemTable
  )
/*++

Routine Description:
  Install WinNtThunk Protocol and it's associated Device Path protocol

Arguments:
  (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)

Returns:
  EFI_SUCEESS - WinNtThunk protocol is added or error status from 
                gBS->InstallMultiProtocolInterfaces().

--*/
// TODO:    ImageHandle - add argument and description to function comment
// TODO:    SystemTable - add argument and description to function comment
{
  EFI_STATUS  Status;
  EFI_HANDLE  ControllerHandle;

  ControllerHandle = NULL;
  Status = gBS->InstallMultipleProtocolInterfaces (
                  &ControllerHandle,
                  &gEfiWinNtThunkProtocolGuid,
                  gWinNt,
                  &gEfiDevicePathProtocolGuid,
                  &mWinNtThunkDevicePath,
                  NULL
                  );

  return Status;
}
